Arnold Company: Logo Arnold Company
2955 Trico Drive
Trenton, Illinois 62293
(800) 245-7505 (USA only)
(618) 224-7505
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Home » Hopper Gate Openers » "Spider" - Three-Wheel Door Demon®
"Spider" - Three-Wheel Door Demon®
QUICK DESCRIPTION: Three wheels makes the "Spider" Door Demon highly maneuverable and adjustable in open areas. A special hydraulic arm allows for vertical adjustment to match most door capstan positions.

Approximate Lead Time: 4 - 6 weeks
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Spider - Three Wheel Door Demon
Figure 1. Spider - Three Wheel Door Demon®

Unit's Physical Dimensions:
54" D x 67" W x 39" H
Ideal for open areas with challenging terrain where space is not a restriction, the Spider offers major stability in a unique three wheel design. Since you cannot tip the unit forward to engage the capstan, a hydraulic arm with cylinder will move the drive bit from 6” to 20” above the working surface allowing the user to easily adjust the height as needed. The wheels are 15” casters: either pneumatic or semi-pneumatic. You can the lock the front two wheels with a pin when side motion is not needed.

The unit is available with electric over hydraulic, pneumatic, or DC battery power. The electric version utilizes explosion proof motors available in either 1 phase or 3 phase and all applicable voltages up to 575 volt. The pneumatic version operates best at 70 CFM @ 90 PSI using a ¾” line. The DC battery version operates with a 12 volt battery system and a built in charger.

Whichever power source you choose, the unit provides heavy duty continuous torque to the power shaft which turns the railcar capstan. The drive bit is a standard taper 1 ½” down to ¾”. The standard shaft length is 26”, but additional lengths are available per your request.

Key Safety Features
When Safety Matters...Choose a Door Demon Safe, Single-person Operation
Helps Prevent Employee Injuries
Lock Out/Tag Out Capability (OSHA Standard)
Powder-coated "Safety Yellow" for Increased Visibility
Removes Workers from Under Railcars During Unit Operation
Explosion Proof Electric Motor for Dust and Dirt Environments
Electric Motors are rated/approved for use in Class 1, Groups C & D, Division 1 as well as Class 2, Groups F & G, Division 2 facilities
Drive Controls Return to Neutral/Stop Upon Release
Safety Enclosed Kill Switch for Quick-and-Easy Shut Off
Stabilizer Bar for Torque Suppression
Stable Platform Allows for Predictable Performance
Even-balanced Weight Distribution for Safe and Easy Maneuvering
 Click HERE to compare the safety features of all of our units.
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Arnold Company • 2955 Trico Drive • Trenton, Illinois 62293 • (800) 245-7505 • (618) 224-7505 •
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